Well, since this thread was dragged from the grave, here is the preamble to my article on Dry Mounting:
The arguments against dry mounting fine art photographs are based upon the fact that the photograph is more or less permanently affixed to the supporting mount, and cannot easily be removed. This notion is promulgated primarily by art galleries and museums, who prefer loose prints per their own display preferences and storage requirements. All I can say, is that if a gallery's concern over your art trumps your own artistic bent, you are either in a position of not needing to read this article or are willing to subjugate your aesthetic principles to others.
...and I'm not even selling anything or offering workshops